BOOK GUIDE DESIGN SUBMARINE TRANSMITTERS ;MANAGMENT GUIDE; STABILIZATION AND DISPOSAL OF RESIDUAL SLUDGES IN PLANTS; GUIDE FOR EVALUATION EFFICIENCY IN ELECTRO MECHANICAL EQUIPES IN OPERATION;GUIDE FOR SELECTION AND INSTALLATION OF ASBESTOS CEMENT PIPE; INSTALLATION ELECTROMECHANIC EQUIPE;TECHNICAL GUIDELINS FOR STUDIES ANDPROJECTS OF WATER AND SEWER AND DRIVE HYDROMETRY EQUIPE FOR DEVELOPMENT AND VALIDATION PROJECTS